Settings
Battery
View how battery power is used for your various device activities.
◌From Settings, tap 
Device care > Battery for options:
•Battery usage: View power usage by app and service.
•Power mode: Select a power mode to extend battery life.
•App power management: Configure battery usage for apps that are used infrequently.
•Charging: Enable the following options to support fast charging capabilities:
–Fast charging
–Protect battery
Storage
View the device storage and usage. You can also mount, unmount, or format an optional memory card (not included).
◌From Settings, tap 
Device care > Storage.
Memory card
Once an optional microSD memory card (not included) has been installed in your device, the card memory is displayed in the Storage setting.
For more information, see Set up your device on page 5.
Mount a memory card
When you install an optional memory card, it is automatically mounted (connected to the device) and prepared for use. However, should you unmount the card without removing it from the device, you need to mount it before it can be accessed.
1.From Settings, tap 
Device care > Storage > Advanced.
2.Under Portable storage, tap your SD card, and then tap Mount.
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